Explanation:
the author needs to get the best information about the hero to explain something about him
Eternal Vigilance is the Price of Liberty. "Those who expect to reap the blessings of freedom must, like men, undergo the fatigue of supporting it." The price of liberty and freedom is huge and you will need to go under certain circumstances in order to get what kind of freedom you deserve and need.
Hope This Helps
Peripeteia is also known as the turning point, the place in which the tragic protagonist's fortune changes from good to bad.